Bladder Relief Ingredients & Drug Interactions
by Bronson Laboratories
What is this page for?
First and foremost: checking Bladder Relief against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.
Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy
Bladder Relief is a dietary supplement by Bronson Laboratories with 2 active ingredients. Its ingredients are commonly taken for benign prostatic hyperplasia (bph) symptoms, overactive bladder, eye and skin health (vitamin a source).Based on those ingredients, 868 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Isoflavone Glycosides, Pumpkin seed extract. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
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HelloPharmacist Scorecard of Bladder Relief by Bronson Laboratories
Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.
What’s inside
Full disclosure
Bladder Relief contains two active ingredients: pumpkin seed extract and isoflavone glycosides (from red clover). The formula also includes several inactive ingredients — rice bran oil, gelatin, glycerin, purified water, yellow beeswax, annatto extract, lecithin, and titanium dioxide — which serve as the softgel capsule base and binders.
Does it work?
Moderate evidence
Pumpkin seed extract is rated possibly effective for benign prostatic hyperplasia (BPH), a condition where the prostate gland enlarges. For other uses — androgenic alopecia (pattern hair loss), interstitial cystitis (bladder inflammation), intestinal parasites, and urinary tract infections — the evidence is insufficient to rate it.
Isoflavone glycosides have insufficient reliable evidence for the conditions we hold data on, including pattern hair loss, menopausal symptoms, osteoarthritis, and osteoporosis.
How safe is it?
Well-documented data
Pumpkin seed extract is generally well tolerated when eaten as food. In concentrated supplement form, the safety data is more limited.
The most common side effects are abdominal discomfort, diarrhea, nausea, and vomiting. Anaphylaxis (a severe allergic reaction) is rare but documented.
In a few case reports, people who ate bitter-tasting or wild pumpkin or squash with high cucurbitacin content developed hair loss or severe nausea and vomiting. Isoflavone glycosides are well tolerated short-term in healthy adults, though common side effects include muscle pain, nausea, and vaginal spotting.
Red clover's estrogen-like activity raises a theoretical concern about breast and uterine cancer risk; one study found it may slightly increase breast density in premenopausal women, though not in postmenopausal women. The safety data advises against use during pregnancy and breastfeeding.
Meds to double-check
Moderate interaction found
Before taking this product, check with your pharmacist if you take lithium (moderate risk), estrogen-containing medications, methotrexate, or tamoxifen (all moderate risk). Additionally, medications broken down by your liver — including certain antidepressants, heart drugs, and many others — may be affected by red clover's enzyme effects (minor risk).
Blood thinners and antiplatelet drugs have a theoretical minor interaction, though it hasn't been confirmed in people.
The bottom line
Scorecard at a glanceFully disclosed formula with some supporting evidence for its stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.
If you have benign prostatic hyperplasia, you might consider this for the pumpkin seed component. Anyone taking lithium, estrogen therapy, methotrexate, tamoxifen, or drugs broken down by your liver should talk to a pharmacist before starting.
Women who are pregnant or breastfeeding should avoid it — the safety data doesn't support its use.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 2 of 2 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Dec 18, 2021.
This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed
General information
Key facts about Bladder Relief, straight from the product label.
| Brand | Bronson Laboratories |
|---|---|
| Barcode (UPC) | 716563341022 |
| Net contents | 120 Softgel(s) |
| Market status | On market |
| Date entered into DSLD | Dec 18, 2021 |
| DSLD ID | 257379 |
| Product type | Other Combinations |
| Supplement form | Softgel Capsule |
| Dietary claims / uses | All Other, Structure/Function |
| Intended target group(s) | Adult Female (18 - 50 Years) |
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.
Supplement Facts
The label details for Bladder Relief by Bronson Laboratories, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Pumpkin seed extract | 270 mg | -- |
| Isoflavone Glycosides | 15 mg | -- |
Other ingredients: Rice Bran Oil, Gelatin, Glycerin, purified Water, yellow Beeswax, Annatto extract, Lecithin, Titanium Dioxide
Tap any ingredient to jump to its full detail below.
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
FDA Statement of Identity
Dietary Supplement
Formulation
Nutrition support for overactive bladder
Made in USA
Formula
Womens health
Precautions
Contains Soy.
Warning: Consult a healthcare professional before taking this product if you are pregnant or nursing, or if you are suffering from a medical condition.
Keep out of reach of children.
Suggested/Recommended/Usage/Directions
Directions: As a dietary supplement for adults, 1 softgel twice daily or as directed by a healthcare professional.
General Statements
EST 1960
Discover the Bronson difference For information call 1-800-235-3200
Storage
Store at room temperature. Protect from light.
FDA Disclaimer Statement
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Bladder Relief by Bronson Laboratories label
The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.
Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.
View the full label (PDF)The Ingredients in Bladder Relief by Bronson Laboratories
These are the 2 active ingredients this product is made of. Select any to open its full monograph.
Serving size1 Softgel(s) Dosage formSoftgel Capsule Servings per container120 Amounts shown are per serving.
Most supplement products combine several ingredients, and a medication can interact with the product through any one of them. Each ingredient below shows whether it has known drug interactions.
Pumpkin seed extract
Interacts with1 drug
Pumpkin is a nutritious squash, and its seeds and seed oil are the parts most often used as supplements, mainly for urinary and prostate symptoms. The...
Pumpkin seed extract monograph & interactionsIsoflavone Glycosides
Interacts with867 drugs
Red clover is a plant rich in isoflavones (plant compounds with weak estrogen-like activity) that is most often used for menopause symptoms like hot f...
Isoflavone Glycosides monograph & interactionsOther (inactive) ingredients: Rice Bran Oil, Gelatin, Glycerin, Purified Water, Yellow Beeswax, Annatto extract, Lecithin, Titanium Dioxide. These complete the product’s ingredient list but are not active constituents.
Bladder Relief by Bronson Laboratories Drug Interactions
HelloPharmacist Interaction Report
Bladder Relief by Bronson Laboratories contains two active ingredients that both interact with medications.
The most serious concern is pumpkin seed extract and lithium — pumpkin's diuretic properties may reduce how your body clears lithium, potentially raising lithium levels and requiring a dose adjustment.
Read the full breakdown — every affected drug type, severity by severity
Isoflavone glycosides (from red clover) carry several moderate interactions. It may interfere with estrogen therapy by competing for estrogen receptors, and there's a case report of severe nausea and vomiting when someone taking methotrexate also took red clover — the combination raised methotrexate toxicity risk.
Red clover also theoretically may interfere with tamoxifen, a breast cancer medication, though animal evidence is mixed.
Red clover can also affect how your liver breaks down certain drugs (cytochrome P450 substrates including CYP1A2, CYP2C19, CYP2C9, and CYP3A4 drugs), though a small clinical study found no real-world effect at typical doses. Minor interactions with blood thinners and antiplatelet drugs are noted in laboratory research but haven't been confirmed in people.
Additionally, pumpkin seed extract has no other documented interactions beyond lithium. Check your exact medications with the tool below before starting.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Bladder Relief?
Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.
Go to the checkerIngredients driving the most interactions
Individual Drug Interactions
The ingredients in Bladder Relief interact with 868 drugs. Click any drug to see the details.
2 of the 2 ingredients in Bladder Relief interact with drugs. Each result below shows which ingredient is responsible. Isoflavone Glycosides Pumpkin seed extract
Bazedoxifene Acetate, Conjugated EstrogensDuavee
How Bazedoxifene Acetate, Conjugated Estrogens interacts with Bladder Relief — through 1 ingredient. Tap an ingredient for the detail:
Isoflavone GlycosidesEstrogens, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, concomitant use of large amounts of red clover might interfere with estrogen therapy.
Read the full Isoflavone Glycosides + Bazedoxifene Acetate, Conjugated Estrogens interactionConjugated EstrogensCenestin, Enjuvia, Premarin, Premarin Vaginal Cream
How Conjugated Estrogens interacts with Bladder Relief — through 1 ingredient. Tap an ingredient for the detail:
Isoflavone GlycosidesCytochrome P450 3a4 (cyp3a4) Substrates, Estrogens Moderate
Interaction Summary
Theoretically, red clover might increase levels of drugs metabolized by CYP3A4; however, a small clinical study found no effect.
Read the full Isoflavone Glycosides + Conjugated Estrogens interactionConjugated Estrogens, Medroxyprogesterone AcetatePremplus, Prempro
How Conjugated Estrogens, Medroxyprogesterone Acetate interacts with Bladder Relief — through 1 ingredient. Tap an ingredient for the detail:
Isoflavone GlycosidesEstrogens, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, concomitant use of large amounts of red clover might interfere with estrogen therapy.
Read the full Isoflavone Glycosides + Conjugated Estrogens, Medroxyprogesterone Acetate interactionConjugated Estrogens, MeprobamatePMB 200, PMB 400
How Conjugated Estrogens, Meprobamate interacts with Bladder Relief — through 1 ingredient. Tap an ingredient for the detail:
Isoflavone GlycosidesCytochrome P450 3a4 (cyp3a4) Substrates, Estrogens Moderate
Interaction Summary
Theoretically, red clover might increase levels of drugs metabolized by CYP3A4; however, a small clinical study found no effect.
Read the full Isoflavone Glycosides + Conjugated Estrogens, Meprobamate interactionConjugated Estrogens, MethyltestosteronePremarin with Methyltestosterone
How Conjugated Estrogens, Methyltestosterone interacts with Bladder Relief — through 1 ingredient. Tap an ingredient for the detail:
Isoflavone GlycosidesEstrogens, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, concomitant use of large amounts of red clover might interfere with estrogen therapy.
Read the full Isoflavone Glycosides + Conjugated Estrogens, Methyltestosterone interactionCyproterone Acetate, Ethinyl EstradiolDiane-35, Dianette
How Cyproterone Acetate, Ethinyl Estradiol interacts with Bladder Relief — through 1 ingredient. Tap an ingredient for the detail:
Isoflavone GlycosidesCytochrome P450 3a4 (cyp3a4) Substrates, Estrogens +1 Moderate
Interaction Summary
Theoretically, red clover might increase levels of drugs metabolized by CYP3A4; however, a small clinical study found no effect.
Read the full Isoflavone Glycosides + Cyproterone Acetate, Ethinyl Estradiol interactionDesogestrel, Ethinyl EstradiolDesogen, Marvelon, Marvelon 21, Marvelon 28, Mircette, Ortho-Cept +2 more
How Desogestrel, Ethinyl Estradiol interacts with Bladder Relief — through 1 ingredient. Tap an ingredient for the detail:
Isoflavone GlycosidesCytochrome P450 3a4 (cyp3a4) Substrates, Cytochrome P450 1a2 (cyp1a2) Substrates +2 Moderate
Interaction Summary
Theoretically, red clover might increase levels of drugs metabolized by CYP3A4; however, a small clinical study found no effect.
Read the full Isoflavone Glycosides + Desogestrel, Ethinyl Estradiol interactionDrospirenone, EstetrolNextstellis
How Drospirenone, Estetrol interacts with Bladder Relief — through 1 ingredient. Tap an ingredient for the detail:
Isoflavone GlycosidesCytochrome P450 3a4 (cyp3a4) Substrates, Cytochrome P450 1a2 (cyp1a2) Substrates +1 Moderate
Interaction Summary
Theoretically, red clover might increase levels of drugs metabolized by CYP3A4; however, a small clinical study found no effect.
Read the full Isoflavone Glycosides + Drospirenone, Estetrol interactionDrospirenone, Ethinyl EstradiolAngeliq, Gianvi, Yasmin
How Drospirenone, Ethinyl Estradiol interacts with Bladder Relief — through 1 ingredient. Tap an ingredient for the detail:
Isoflavone GlycosidesEstrogens, Cytochrome P450 3a4 (cyp3a4) Substrates +1 Moderate
Interaction Summary
Theoretically, concomitant use of large amounts of red clover might interfere with estrogen therapy.
Read the full Isoflavone Glycosides + Drospirenone, Ethinyl Estradiol interactionEsterified EstrogensEstratab, Menest
How Esterified Estrogens interacts with Bladder Relief — through 1 ingredient. Tap an ingredient for the detail:
Isoflavone GlycosidesEstrogens, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, concomitant use of large amounts of red clover might interfere with estrogen therapy.
Read the full Isoflavone Glycosides + Esterified Estrogens interactionEsterified Estrogens, MethyltestosteroneEstratest
How Esterified Estrogens, Methyltestosterone interacts with Bladder Relief — through 1 ingredient. Tap an ingredient for the detail:
Isoflavone GlycosidesCytochrome P450 3a4 (cyp3a4) Substrates, Estrogens Moderate
Interaction Summary
Theoretically, red clover might increase levels of drugs metabolized by CYP3A4; however, a small clinical study found no effect.
Read the full Isoflavone Glycosides + Esterified Estrogens, Methyltestosterone interactionEstradiolDivigel, Elestrin, Estrace, Estraderm, Estring, Evamist +6 more
How Estradiol interacts with Bladder Relief — through 1 ingredient. Tap an ingredient for the detail:
Isoflavone GlycosidesEstrogens, Cytochrome P450 3a4 (cyp3a4) Substrates +1 Moderate
Interaction Summary
Theoretically, concomitant use of large amounts of red clover might interfere with estrogen therapy.
Read the full Isoflavone Glycosides + Estradiol interactionEstradiol, MedroxyprogesteroneDivitren
How Estradiol, Medroxyprogesterone interacts with Bladder Relief — through 1 ingredient. Tap an ingredient for the detail:
Isoflavone GlycosidesCytochrome P450 1a2 (cyp1a2) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates +1 Moderate
Interaction Summary
Theoretically, red clover might increase levels of drugs metabolized by CYP1A2; however, a small clinical study found no effect.
Read the full Isoflavone Glycosides + Estradiol, Medroxyprogesterone interactionEstradiol, Norethindrone AcetateActivella
How Estradiol, Norethindrone Acetate interacts with Bladder Relief — through 1 ingredient. Tap an ingredient for the detail:
Isoflavone GlycosidesEstrogens, Cytochrome P450 1a2 (cyp1a2) Substrates +1 Moderate
Interaction Summary
Theoretically, concomitant use of large amounts of red clover might interfere with estrogen therapy.
Read the full Isoflavone Glycosides + Estradiol, Norethindrone Acetate interactionEstradiol, NorgestimateOrtho-Prefest
How Estradiol, Norgestimate interacts with Bladder Relief — through 1 ingredient. Tap an ingredient for the detail:
Isoflavone GlycosidesEstrogens, Cytochrome P450 1a2 (cyp1a2) Substrates Moderate
Interaction Summary
Theoretically, concomitant use of large amounts of red clover might interfere with estrogen therapy.
Read the full Isoflavone Glycosides + Estradiol, Norgestimate interactionEstradiol, ProgesteroneBijuvanda
How Estradiol, Progesterone interacts with Bladder Relief — through 1 ingredient. Tap an ingredient for the detail:
Isoflavone GlycosidesCytochrome P450 1a2 (cyp1a2) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates +1 Moderate
Interaction Summary
Theoretically, red clover might increase levels of drugs metabolized by CYP1A2; however, a small clinical study found no effect.
Read the full Isoflavone Glycosides + Estradiol, Progesterone interactionEstrogenEstrogen
How Estrogen interacts with Bladder Relief — through 1 ingredient. Tap an ingredient for the detail:
Isoflavone GlycosidesEstrogens, Cytochrome P450 1a2 (cyp1a2) Substrates +1 Moderate
Interaction Summary
Theoretically, concomitant use of large amounts of red clover might interfere with estrogen therapy.
Read the full Isoflavone Glycosides + Estrogen interactionEstroneOrtho-Est
How Estrone interacts with Bladder Relief — through 1 ingredient. Tap an ingredient for the detail:
Isoflavone GlycosidesEstrogens Moderate
Interaction Summary
Theoretically, concomitant use of large amounts of red clover might interfere with estrogen therapy.
Read the full Isoflavone Glycosides + Estrone interactionEstropipateOgen, Ortho EST
How Estropipate interacts with Bladder Relief — through 1 ingredient. Tap an ingredient for the detail:
Isoflavone GlycosidesEstrogens Moderate
Interaction Summary
Theoretically, concomitant use of large amounts of red clover might interfere with estrogen therapy.
Read the full Isoflavone Glycosides + Estropipate interactionEthiny Estradiol, LevonorgestrelLogynon, Microgynon 30 ED
How Ethiny Estradiol, Levonorgestrel interacts with Bladder Relief — through 1 ingredient. Tap an ingredient for the detail:
Isoflavone GlycosidesCytochrome P450 3a4 (cyp3a4) Substrates, Estrogens +1 Moderate
Interaction Summary
Theoretically, red clover might increase levels of drugs metabolized by CYP3A4; however, a small clinical study found no effect.
Read the full Isoflavone Glycosides + Ethiny Estradiol, Levonorgestrel interactionEthinyl EstradiolEstinyl
How Ethinyl Estradiol interacts with Bladder Relief — through 1 ingredient. Tap an ingredient for the detail:
Isoflavone GlycosidesCytochrome P450 1a2 (cyp1a2) Substrates, Estrogens +1 Moderate
Interaction Summary
Theoretically, red clover might increase levels of drugs metabolized by CYP1A2; however, a small clinical study found no effect.
Read the full Isoflavone Glycosides + Ethinyl Estradiol interactionEthinyl Estradiol, DesogestrelApri, Cesia, Cyclessa, Gedarel, Kariva, Linessa +4 more
How Ethinyl Estradiol, Desogestrel interacts with Bladder Relief — through 1 ingredient. Tap an ingredient for the detail:
Isoflavone GlycosidesCytochrome P450 2c9 (cyp2c9) Substrates, Estrogens +2 Moderate
Interaction Summary
Theoretically, red clover might increase levels of drugs metabolized by CYP2C9; however, a small clinical study found no effect.
Read the full Isoflavone Glycosides + Ethinyl Estradiol, Desogestrel interactionEthinyl Estradiol, DrospirenoneYaz
How Ethinyl Estradiol, Drospirenone interacts with Bladder Relief — through 1 ingredient. Tap an ingredient for the detail:
Isoflavone GlycosidesCytochrome P450 3a4 (cyp3a4) Substrates, Cytochrome P450 1a2 (cyp1a2) Substrates +1 Moderate
Interaction Summary
Theoretically, red clover might increase levels of drugs metabolized by CYP3A4; however, a small clinical study found no effect.
Read the full Isoflavone Glycosides + Ethinyl Estradiol, Drospirenone interactionEthinyl Estradiol, Ethynodiol DiacetateDemulen 1/35, Demulen 1/50, Demulen Compack, Kelnor 1/35, Zovia, Zovia 1/35 +1 more
How Ethinyl Estradiol, Ethynodiol Diacetate interacts with Bladder Relief — through 1 ingredient. Tap an ingredient for the detail:
Isoflavone GlycosidesEstrogens, Cytochrome P450 1a2 (cyp1a2) Substrates +1 Moderate
Interaction Summary
Theoretically, concomitant use of large amounts of red clover might interfere with estrogen therapy.
Read the full Isoflavone Glycosides + Ethinyl Estradiol, Ethynodiol Diacetate interactionEthinyl Estradiol, LevonorgestrelAlesse, Alesse 21, Alesse 28, Aviane, Enpresse, Jolessa +18 more
How Ethinyl Estradiol, Levonorgestrel interacts with Bladder Relief — through 1 ingredient. Tap an ingredient for the detail:
Isoflavone GlycosidesEstrogens, Cytochrome P450 3a4 (cyp3a4) Substrates +1 Moderate
Interaction Summary
Theoretically, concomitant use of large amounts of red clover might interfere with estrogen therapy.
Read the full Isoflavone Glycosides + Ethinyl Estradiol, Levonorgestrel interactionEthinyl Estradiol, NorethindroneAranelle, Brevicon, Brevicon .5/35 21 day, Brevicon .5/35 28 day, Brevicon 1/35 21 day, Brevicon 1/35 28 day +50 more
How Ethinyl Estradiol, Norethindrone interacts with Bladder Relief — through 1 ingredient. Tap an ingredient for the detail:
Isoflavone GlycosidesCytochrome P450 1a2 (cyp1a2) Substrates, Estrogens +1 Moderate
Interaction Summary
Theoretically, red clover might increase levels of drugs metabolized by CYP1A2; however, a small clinical study found no effect.
Read the full Isoflavone Glycosides + Ethinyl Estradiol, Norethindrone interactionEthinyl Estradiol, Norethindrone, Ferrous FumarateEstrostep Fe, Femcon FE, Junel Fe 1.5/30, Loestrin Fe, Loestrin Fe 1.5/30, Loestrin Fe 1/20 +3 more
How Ethinyl Estradiol, Norethindrone, Ferrous Fumarate interacts with Bladder Relief — through 1 ingredient. Tap an ingredient for the detail:
Isoflavone GlycosidesEstrogens, Cytochrome P450 3a4 (cyp3a4) Substrates +1 Moderate
Interaction Summary
Theoretically, concomitant use of large amounts of red clover might interfere with estrogen therapy.
Read the full Isoflavone Glycosides + Ethinyl Estradiol, Norethindrone, Ferrous Fumarate interactionEthinyl Estradiol, NorgestimateCilest, Mononessa, Ortho Tri-Cyclen 28, Ortho Tri-Cyclen Lo, Ortho Tri-Cylcen, Ortho-Cyclen +5 more
How Ethinyl Estradiol, Norgestimate interacts with Bladder Relief — through 1 ingredient. Tap an ingredient for the detail:
Isoflavone GlycosidesCytochrome P450 1a2 (cyp1a2) Substrates, Estrogens +1 Moderate
Interaction Summary
Theoretically, red clover might increase levels of drugs metabolized by CYP1A2; however, a small clinical study found no effect.
Read the full Isoflavone Glycosides + Ethinyl Estradiol, Norgestimate interactionEthinyl Estradiol, NorgestrelCryselle, Lo/Ovral, Low-Ogestrel, Ogestrel 0.5/50, Ovral
How Ethinyl Estradiol, Norgestrel interacts with Bladder Relief — through 1 ingredient. Tap an ingredient for the detail:
Isoflavone GlycosidesCytochrome P450 3a4 (cyp3a4) Substrates, Estrogens +1 Moderate
Interaction Summary
Theoretically, red clover might increase levels of drugs metabolized by CYP3A4; however, a small clinical study found no effect.
Read the full Isoflavone Glycosides + Ethinyl Estradiol, Norgestrel interactionEthinyl Estradiol, LevonogestrelLybrel
How Ethinyl Estradiol, Levonogestrel interacts with Bladder Relief — through 1 ingredient. Tap an ingredient for the detail:
Isoflavone GlycosidesCytochrome P450 1a2 (cyp1a2) Substrates, Estrogens +1 Moderate
Interaction Summary
Theoretically, red clover might increase levels of drugs metabolized by CYP1A2; however, a small clinical study found no effect.
Read the full Isoflavone Glycosides + Ethinyl Estradiol, Levonogestrel interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Bladder Relief with known interactions, here are the types of medications they can affect. Open any type for the detail — or search your exact drug in the checker above.
Isoflavone Glycosides
Estrogens
Theoretically, concomitant use of large amounts of red clover might interfere with estrogen therapy.
Red clover contains phytoestrogens which might have estrogenic activity in some people. Theoretically, red clover might compete for estrogen receptors and interfere with estrogen-containing drug therapy.
Methotrexate (Trexall, Others)
Theoretically, red clover might increase the risk of methotrexate toxicity.
In a case report, a 52-year-old female receiving weekly methotrexate injections for psoriasis developed symptoms of methotrexate toxicity, including severe vomiting and epigastric pain, after three days of taking red clover 430 mg daily. Toxicity resolved after red clover was discontinued. However, no liver function tests or methotrexate levels were reported.
Tamoxifen (Nolvadex)
Theoretically, the phytoestrogens in red clover might interfere with tamoxifen.
In vitro and animal research suggests that genistein, a constituent of red clover, might antagonize the antitumor effects of tamoxifen. However, there is some evidence from an animal study that red clover does not reduce the efficacy of tamoxifen. Until more is known, tell patients taking tamoxifen to avoid red clover.
Anticoagulant/Antiplatelet Drugs
Although some laboratory research suggests that red clover may have anticoagulant and antiplatelet activity, clinical research has not shown this effect.
In vitro research suggests that genistein in red clover has antiplatelet effects, and historically, red clover was thought to have anticoagulant effects due to its coumarin content. However, some experts state that this is unlikely as most natural coumarins have not been shown to have anticoagulant effects, and their content in red clover is low. Additionally, some clinical research in postmenopausal patients found no effect on coagulation or prothrombin time with the use of red clover flowering tops 378 mg daily for 12 months or red clover isoflavone (Rimostil) 50 mg daily for 2 years.
Caffeine
Theoretically, soy might reduce the clearance of caffeine; however, a small clinical study found no effect.
Red clover contains genistein. Taking genistein 1 gram daily for 14 days seems to inhibit caffeine clearance and metabolism in healthy females. However, this effect does not seem to occur with the lower amounts of genistein found in red clover. A clinical study in healthy postmenopausal individuals shows that taking red clover capsules standardized to contain 60 mg isoflavones twice daily for 14 days does not affect the pharmacokinetics of caffeine.
Cytochrome P450 1A2 (Cyp1A2) Substrates
Theoretically, red clover might increase levels of drugs metabolized by CYP1A2; however, a small clinical study found no effect.
In vitro evidence shows that red clover inhibits CYP1A2. However, a clinical study in healthy postmenopausal individuals shows that taking red clover capsules standardized to contain 60 mg isoflavones twice daily for 14 days does not affect the pharmacokinetics of caffeine, a CYP1A2 probe substrate.
Cytochrome P450 2C19 (Cyp2C19) Substrates
Theoretically, red clover might increase the levels and clinical effects of drugs metabolized by CYP2C19.
In vitro evidence suggests that red clover weakly inhibits CYP2C19. This interaction has not been reported in humans.
Cytochrome P450 2C9 (Cyp2C9) Substrates
Theoretically, red clover might increase levels of drugs metabolized by CYP2C9; however, a small clinical study found no effect.
In vitro evidence suggests that red clover might inhibit CYP2C9. However, a clinical study in healthy postmenopausal individuals shows that taking red clover capsules standardized to contain 60 mg isoflavones twice daily for 14 days does not affect the pharmacokinetics of tolbutamide, a CYP2C9 probe substrate.
Cytochrome P450 3A4 (Cyp3A4) Substrates
Theoretically, red clover might increase levels of drugs metabolized by CYP3A4; however, a small clinical study found no effect.
In vitro evidence shows that red clover might inhibit CYP3A4 isoenzymes. However, a clinical study in healthy postmenopausal individuals shows that taking red clover capsules standardized to contain 60 mg isoflavones twice daily for 14 days does not affect the pharmacokinetics of alprazolam, a CYP3A4 probe substrate.
Pumpkin seed extract
Lithium
Pumpkin might reduce excretion and increase levels of lithium.
Pumpkin is thought to have diuretic properties. Theoretically, this might reduce excretion and increase levels of lithium. The dose of lithium might need to be decreased.
Brand information
Manufacturer and brand details for Bladder Relief, from the product label.
Bronson Laboratories
- Name
- Bronson Laboratories
- City
- Lindon
- State
- UT
- ZipCode
- 84042
- Phone Number
- 1-800-235-3200
Bladder Relief by Bronson Laboratories: Common Questions
Does Bladder Relief by Bronson Laboratories interact with any medications?
How can one product interact with so many drugs?
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What is pumpkin seed extract supposed to do?
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Does this interact with blood thinners?
Can this affect how my medications work?
Is there any concern about breast cancer risk?
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Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.
The Full Monographs Behind Bladder Relief’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Pumpkin
Interacts with 1 drugPumpkin is a nutritious squash, and its seeds and seed oil are the parts most often used as supplements, mainly for urinary and prostate symptoms. The evidence for these uses is limited and...
Read the full Pumpkin monograph → Herb & supplement monographRed Clover
Interacts with 867 drugsRed clover is a plant rich in isoflavones (plant compounds with weak estrogen-like activity) that is most often used for menopause symptoms like hot flashes. The evidence is mixed and genera...
Read the full Red Clover monograph →Sources & How We Checked
Bladder Relief's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.
- NIH Dietary Supplement Label Database (DSLD) — The official product label on file for this supplement.
- Natural Medicines (Therapeutic Research Center) — Evidence-graded clinical reference behind the ingredient interaction data.
Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.
The 29 references behind this product’s interaction data
Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.
Pumpkin 5 references
- Marks L, Partin AW, Epstein JI, et al. Effects of a saw palmetto herbal blend in men with symptomatic benign prostatic hyperplasia. J Urol 2000;163:1451-6. DOI
- Cho YH, Lee SY, Jeong DW, et al. Effect of pumpkin seed oil on hair growth in men with androgenetic alopecia: a randomized, double-blind, placebo-controlled trial. Evid Based Complement Alternat Med 2014;2014:549721. PubMed
- Vahlensieck W, Theurer C, Pfitzer E, Patz B, Banik N, Engelmann U. Effects of pumpkin seed in men with lower urinary tract symptoms due to benign prostatic hyperplasia in the one-year, randomized, placebo-controlled GRANU study. Urol Int 2015;94(3):286-95 PubMed
- Assouly P. Hair loss associated with cucurbit poisoning. JAMA Dermatol. 2018 May 1;154(5):617-618. PubMed
- Gawryjolek J, Ludwig H, Zbikowska-Götz M, Bartuzi Z, Krogulska A. Anaphylaxis after consumption of pumpkin seeds in a 2-y-old child tolerant to its pulp: A case study. Nutrition 2021;89:111272. PubMed
Red Clover 24 references
- Kurzer MS, Xu X. Dietary phytoestrogens. Annu Rev Nutr 1997;17:353-81. PubMed
- Electronic Code of Federal Regulations. Title 21. Part 182 -- Substances Generally Recognized As Safe. Available at: https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?CFRPart=182
- Budzinski JW, Foster BC, Vandenhoek S, Arnason JT. An in vitro evaluation of human cytochrome P450 3A4 inhibition by selected commercial herbal extracts and tinctures. Phytomedicine 2000;7:273-82. PubMed
- This P, De La Rochefordiere A, Clough K, et al. Phytoestrogens after breast cancer. Endocr Relat Cancer 2001;8:129-34. PubMed
- Tice J, Cummings SR, Ettinger B, et al. Few adverse effects of two red clover extracts rich in phytoestrogens: a multicenter, placebo-controlled trial. Alt Ther 2001;7:S33.
- Ingram DM, Hickling C, West L, et al. A double-blind randomized controlled trial of isoflavones in the treatment of cyclical mastalgia. The Breast 2002;11:170-4. PubMed
- Unger M, Frank A. Simultaneous determination of the inhibitory potency of herbal extracts on the activity of six major cytochrome P450 enzymes using liquid chromatography/mass spectrometry and automated online extraction. Rapid Commun Mass Spectrom 2004;1 PubMed
- Cheong JL, Bucknall R. Retinal vein thrombosis associated with a herbal phytoestrogen preparation in a susceptible patient. Postgrad Med J 2005;81:266-7.. PubMed
- Geller SE, Shulman LP, van Breemen RB, et al. Safety and efficacy of black cohosh and red clover for the management of vasomotor symptoms: a randomized controlled trial. Menopause 2009;16:1156-66. PubMed
- Hidalgo LA, Chedraui PA, Morocho N, et al. The effect of red clover isoflavones on menopausal symptoms, lipids and vaginal cytology in menopausal women: a randomized, double-blind, placebo-controlled study. Gynecol Endocrinol 2005;21(5):257-264. PubMed
- Campbell MJ, Woodside JV, Honour JW, et al. Effect of red clover-derived isoflavone supplementation on insulin-like growth factor, lipid and antioxidant status in healthy female volunteers: a pilot study. Eur J Clin Nutr 2004;58(1):173-179. PubMed
- Guerrero JA, Lozano ML, Castillo J, et al. Flavonoids inhibit platelet function through binding to the thromboxane A2 receptor. J Thromb Haemost 2005;3(2):369-376. PubMed
- Kondo K, Suzuki Y, Ikeda Y, Umemura K. Genistein, an isoflavone included in soy, inhibits thrombotic vessel occlusion in the mouse femoral artery and in vitro platelet aggregation. Eur J Pharmacol 2002;455(1):53-57. PubMed
- Polini N, Rauschemberger MB, Mendiberri J, et al. Effect of genistein and raloxifene on vascular dependent platelet aggregation. Mol Cell Endocrinol 2007;267(1-2):55-62. PubMed
- Wuttke W, Jarry H, Seidlova-Wuttke D. Plant-derived alternative treatments for the aging male: facts and myths. Aging Male 2010;13(2):75-81. PubMed
- Villaseca P. Non-estrogen conventional and phytochemical treatments for vasomotor symptoms: what needs to be known for practice. Climacteric 2012;15(2):115-124. PubMed
- Chen, Y., Xiao, C. Q., He, Y. J., Chen, B. L., Wang, G., Zhou, G., Zhang, W., Tan, Z. R., Cao, S., Wang, L. P., and Zhou, H. H. Genistein alters caffeine exposure in healthy female volunteers. Eur.J Clin.Pharmacol. 2011;67(4):347-353. PubMed
- Friedman, J. A., Taylor, S. A., McDermott, W., and Alikhani, P. Multifocal and recurrent subarachnoid hemorrhage due to an herbal supplement containing natural coumarins. Neurocrit.Care 2007;7(1):76-80. PubMed
- Hooper, L., Madhavan, G., Tice, J. A., Leinster, S. J., and Cassidy, A. Effects of isoflavones on breast density in pre- and post-menopausal women: a systematic review and meta-analysis of randomized controlled trials. Hum.Reprod.Update. 2010;16(6):745-7 PubMed
- Orr A and Parker R. Red clover causing symptoms suggestive of methotrexate toxicity in a patient on high-dose methotrexate. Menopause Int. 2013;19(3):133-134. PubMed
- Clifton-Bligh PB, et al. Red cover isoflavones enriched with formononetin lower serum LDL cholesterol- a randomized, double-blind, placebo-controlled trial. Eur J Clin Nutr. 2015;69(1):134-142.
- Risk assessment for peri- and post-menopausal women taking food supplements containing isolated isoflavones. EFSA Panel on Food Additives and Nutrient Sources added to Food (ANS). 2015. DOI
- Ferraris C, Ballestra B, Listorti C, et al. Red clover and lifestyle changes to contrast menopausal symptoms in premenopausal patients with hormone-sensitive breast cancer receiving tamoxifen. Breast Cancer Res Treat 2020;180(1):157-65. doi: 10.1007/s1054 PubMed
- Chen L, Choi J, Leonard SW, et al. No Clinically Relevant Pharmacokinetic Interactions of a Red Clover Dietary Supplement with Cytochrome P450 Enzymes in Women. J Agric Food Chem. 2020;68(47):13929-13939. PubMed
Parts of this content are provided by the Therapeutic Research Center, LLC.
DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.
© 2021 Therapeutic Research Center, LLC